ALSA: hda - Use generic parser in Conexant codec driver

... and drop most of own parser code.

It doesn't replace any present static quirks, though.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/Kconfig

@@ -162,6 +162,7 @@ config SND_HDA_CODEC_CIRRUS
 config SND_HDA_CODEC_CONEXANT
 	bool "Build Conexant HD-audio codec support"
 	default y
+	select SND_HDA_GENERIC
 	help
 	  Say Y here to include Conexant HD-audio codec support in
 	  snd-hda-intel driver, such as CX20549.